Electric motor



2 Sheets-Sheet 1.

(No Model.)

J. BEATTIE, Jr.

ELECTRIC MOTOR.

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(No Model.) 2 Shets-Sheet 2.

J. BEATTIE, Jr.

ELECTRIC MOTOR. No. 346,527. Patented Aug. 3, 1886.

Fig. 3.

ATTEST/ /N\/ENTUF I A? I B JohnBeaizz'a J2:

UNITED STATES PATENT OFFICE.

JOHN BEATTIE, JR, OF \VESTPORT, MASSACHUSETTS.

ELECTRIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 346,527, dated August3, 1886.

Application filed )l'arch 15, 1886.

To all whom it may concern.-

Be it known that I, JOHN BEATTIE, Jr., a citizen of the United States,and a resident of XVestport, in the county of Bristol and State ofMassachusetts, have invented certain new and useful Improvements inAutomatic Electric-Motor Systems, described, claimed, and shown in thefollowing specification, claims, and drawings.

My invention relates to an automatic electrio-motor system comprising anarmature, field-magnets, a ball-governor, and auxiliary or externalresistances adapted to be substituted automatically for one or more ofthe coils composing the field-magnets.

The object of the invention is to obtain, by simple means, astcadymain-line current, even when one or more lamps are cut in or out, eitheraccidentally or for a purpose.

The system including my invention consists of an armature provided withtwo sets of grooves-the one longitudinal and the other circulararoundthe axis of the armature, and with a groove running across each end ofthe armature; of field-magnets provided with several independent coilsupon each leg or arm of themagnets; of a governor geared to thearmature-shaft and to a lever which is adapted by its movements to outout one or more of the field-magnet coils and to substitute therefor oneor more equivalent coils which are not a part of the field-magnets.

In order to illustrate the practical manner of carrying out theinvention drawings are hereunto annexed and described, in which similarletters of reference represent corresponding elements, and in which eachpart referred to is designated by a single letter.

The materials of construction employed, the exact forms of design, andthe proportional dimensions are not alluded to, as they are bestdetermined upon by those versed in the art.

Figure 1 is a general view of the system, the governor being shown inthe lower part of the figure upon a skeleton motor instead of upon thedynamo itself, which is shown in the upper part of the figure; and Figs.2. 3, 4, 5, and 6 show details of the armature. Fig. 3 is a sectionalview of Fig. 2 at line 3 Fig. 4 is the same at line 00.

The system consists of the combination of an Serial No. 195,277. (Nomodel.)

armature, A, field-magnets B, wound with multiple coils U, a governor,D, geared to the shaft E of said armature by means of the intermediategear-wheels, F G H, a series of external resistance-coils, I, a toothedwheel, J, a lever, K, fixed to the shaft J of said wheel, and adapted totouch both the terminals L of the field-magnet coils and those L of theresistance-coils, and a second lever, K, pro vided at one end with atoothed segment, M, which gears into said toothed wheel, and at theother end with a slotted head, N, which is loosely attached to theoperating part 0 of the said governor, the first-mentioned lever beingin series with one or more of said fieldmagnet coils, which areinparallel circuit, and with one or more of the external resistancecoils,which are also in parallel circuit.

The armature, Figs. 2, 3, 4, 5, and 6, consists of a cylinder having tworectangular grooves, P and 1?, extending around the same by passingalong opposite sides and parallel to the armature-shaft E, and acrossboth ends at right angles to each other, a series of deep annulargrooves, Q, lying in parallel planes and perpendicular to thearmature-shaft E, a hub, It, at each end of said armature, and havingradial arms or spokes R, terminating in a ring, S, set-screws assistingto secure said ring to projections U upon each end of said armature,said projections being formed by the two grooves P and P,which cross atthe ends of the armature, and a hollow shaft, E, secured to each hub,and projecting in opposite directions from each other, and not passingthrough the body of the armature.

Only one end of the armature and one hub are shown, as the other end andother hub are in every respect similar thereto. The wire is wound a laSiemens. It is represented at V in one of the grooves.

In Fig. 1, for the sake of clearness, the governor is represented in thelower part of the figure upon a skeleton or diagram of the motor, whichis shown more fully in the upper part of the same figure.

The modus operemdi is simply that any increase of speed in the motorcauses thesubstitution of one or more of the resistance-coils for a likenumber of the field-magnet coils.

The principles of construction and operations involved in the above areevidently attained in many variations in the specific character of thedevices employed without departing from the spirit of the invention.

Having now stated the title, object, and relation of the said invention,having described its practical realization by reference to theacc0mpanyingdrawings,and having particularly ascertained the manner inwhich the same operates to accomplish the said object, what I considerto be novel and original, and therefore claim as my invention, securedto me by the hereinbefore in part recited application for Letters Patentof the United States, is

' 1. In an automatic selfregulating electricmotor system,the combinationof an armature; field-magnet coils in parallel circuit, external coilsor resistances,also in parallel circuit, terminals to both theabove-mentioned kind of coils located in the same circumference, a leverof conducting material connecting two or more of said terminals andlocatedin the main circuit, and a toothed wheelattached to said lever atits center and geared to a ballgovernor which has operatingcommunication with the shaft of said armature.

2. In an automatic self-regulating electricmotor system,the combinationofan armature, fieldmagnets wound with multiple coils,agovernor gearedto the shaft of said armature, a

series of resistances, a toothed wheel, a lever fixed to the shaft ofsaid wheel, and in contact at opposite ends with the terminals,respectively, of the said multiple coils and said resistances, and asecond lever provided at one end with a toothed segment, which gearsinto said toothed wheel, and at the other end with a slotted head, whichis loosely attached to the operating part of the said governor, thefirst-mentioned lever being both in series with one or more of saidmultiple field-magnet coils,which are connected up in parallel,an'd withn0ne,one, or more of said external resistances, which are also connectedup in parallel circuit.

3. In an automatic self-regulating electricmotor system, an armatn reframe, 8, consisting 5 of a cylinder having two rectangular groovesextending around the said cylinder by passing along both sides in thedirection of the armature-axis, and across both ends at right angles toeach other, a series of deep annular grooves '50 in parallel planes andperpendicular to said axis, a hub at each end of said armature, andhaving radial arms or spokes terminating in'a ring, set-screws securingsaid ring to projections upon each end of said armature, said pro- 5jections being formed by the said grooves, which cross at the ends ofthe armature, and a hollow shaft secured to each hub and projecting inopposite direction from each other.

In testimony whereof I hereunto sign my 60 name, in the presence of twosubscribing witnesses, this 6th day of March, 1886.

JOHN BEATTIE, -J R.

Witnesses:

DANIEL A. BUTLER, ISAAC B. TOMPKINS.

